The Two Leader Knots You Need to Know

Just two leader knots? Yes, there're are plenty more but two is all you need - one for joining lines of different materials and diameters, and another for similar line types and diameters

There are two basic types of leader - one is a strong shock leader,
required to withstand the high shock loads of casting. This often involves connecting lines of diffent types and diameters, such as braid mainline to a mono or fluorocarbon leader.

The other is a
hard-wearing leader required to resist abrasion or the teeth of
predatory fish, such as for a mono mainline to a heavier mono leader.

Safe, reliable connections for these situations are described here.

Connecting Different Line Types and Diameters

For example:~

connecting a single-strand wire leader to a nylon monofilament line, or

connecting a nylon monofilament or a fluorocarbon leader to a much thinner dyneema or spectra braid main line

The Albright Special Knot

Stage 1

First, double back the end of the single strand wire leader and thread the mono through the eye produced.

Stage 2

Next, start whipping back the mono over itself and the leader.

Stage 3

Then, make about ten turns before tucking the tag end of the mono
through the loop such that it emerges on the same side as it entered.

Stage 4

Finally, lubricate with saliva before smoothly pulling the knot up tight.

Trim both ends, and that's it - a knot for connecting different line types and diameters

Connecting Lines of Similar Types and Diameters

For example:~

connecting a low-visibility fluorocarbon leader to a more visible nylon monofilament main line, or

connecting a heavier nylon monofilament shock leader to a lighter mono main line

Two Uni-Knots tied Back-to-Back

Stage 1

First, lay the two lines to be connected alongside and form a loop as shown here.

Stage 2

Now make at least four turns (more for light lines) around both
strands and through the loop. Wet the knot with saliva and start
tightening it by first pulling on the tag end in the direction of the
arrow.

Stage 3

Then, with the knot now well consolidated, snip the ends off close and
pull on the two lines to slide the two knots towards each other.

Stage 4

And that's it, the finished knot for joining a nylon monofilament main line to a fluorocarbon leader.